Like the tempered-glass versions of the Pro M and Enthoo Luxe models, the new take on the P400 is fundamentally unchanged from its original release. That means it takes motherboards up to E-ATX, accepts up to seven 120-mm fans, and includes a basic RGB LED controller. Builders can mount up to six 3.5" drives and two 2.5" drives in the P400.

The silent version of the P400, appropriately called the P400S, is also getting a glass-sided version. That case comes with soundproofing foam on all of the panels that aren't glass, as well as a fan controller hub. Both the P400 and P400S will be available five different finishes: black, white, grey, and limited-edition black-and-red and black-and-white designs.

Phanteks says the glass P400s will be available at "most retailers" in November. The P400 will be going for €79 (or $86), and the silent P400S will sell for €89 (around $97).